Título
BLOWUP AND LIFE SPAN BOUNDS FOR A REACTION-DIFFUSION EQUATION WITH A TIME-DEPENDENT GENERATOR
Autor
EKATERINA TODOROVA KOLKOVSKA
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
We consider the nonlinear equation
@
@t
u(t) = k(t)u(t) + u1+(t), u(0, x) = '(x), x 2 Rd,
where := −(−)/2 denotes the fractional power of the Laplacian; 0 <
2, , > 0 are constants; ' is bounded, continuous, nonnegative
function that does not vanish identically; and k is a locally integrable function.
We prove that any combination of positive parameters d, , , , obeying
0 < d/ < 1, yields finite time blow up of any nontrivial positive solution.
Also we obtain upper and lower bounds for the life span of the solution, and
show that the life span satisfies T' −/(−d) near = 0.
Editor
Department of Mathematics Texas State University
Fecha de publicación
2008
Tipo de publicación
Artículo
Versión de la publicación
Versión publicada
Recurso de información
Formato
application/pdf
Idioma
Inglés
Audiencia
Investigadores
Repositorio Orígen
Repositorio Institucional CIMAT
Descargas
317